seminar class

Created By G.Satheesh

STYX NUMBER

Sytx number helps us to understand the relation between the nature of bondings in borane and it's structure.

It's the code system, which represent the overall valence bonding in boranes by four digit number. In this,

S = Number of B-H-B bonds (First digit)

T = Number of B-B-B bonds (Second digit)

Y = Number of B-B bonds (Third digit)

X = Number of BH2 bonds (Fourth digit)

Styx number for various boranes on the basis of structure described above as

B2H6 = 2002

B4H10 = 4012

B5H9 = 4120

B5H11 = 3203

B6H10 = 4220

B10H14 = 4620

Example for (B2H6 - Diborane6)

Now we using B2H6 structure to find styx code

S = B-H-B = 2

T = B-B-B = 0

Y = B-B = 0

S = BH2 = 2

STYX CODE (B2H6) = 2002

Structures for other formulas

B4H10 (Tetraborane10)

STYX CODE (B4H10) = 4012

B5H9 (Pentaborane9)

STYX CODE (B5H9) = 4120

B5H11 (Pentaborane11)

STYX CODE (B5H11) = 3203

B6H10 (Hexaborane10)

STYX CODE (B6H10) = 4220

B10H14 (Decaborane14)

STYX CODE (B10H14) = 4620

Extra skills

How to find Styx code in 10 seconds without structure in one mark questions

1.Choose the correct styx code for B4H10 ?

a.) 3203

b.) 4012

c.) 4620

d.) 2002

2.Choose the correct styx code for B5H11 ?

a.) 3203

b.) 4620

c.) 4220

d.) 4120

Greek Numerical Prefixes